tests/shaders/fp-incomplete-tex.c

   1 /*
   2  * Copyright (c) The Piglit project 2007
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  18  * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * According to the ARB_fragment_program spec, section 3.11.6,
  26  * sampling an incomplete texture image yields (0,0,0,1).
  27  */
  28
  29 #include "piglit-util-gl.h"
  30
  31 PIGLIT_GL_TEST_CONFIG_BEGIN
  32
  33         config.supports_gl_compat_version = 10;
  34
  35         config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH;
  36
  37 PIGLIT_GL_TEST_CONFIG_END
  38
  39 #define NUM_PROGRAMS 5
  40
  41 static GLuint FragProg[NUM_PROGRAMS];
  42
  43 static const char* const ProgramText[NUM_PROGRAMS] = {
  44                 "!!ARBfp1.0\n"
  45                 "TEX result.color, fragment.color, texture[0], 2D;\n"
  46                 "END",
  47
  48                 "!!ARBfp1.0\n"
  49                 "TEX result.color, fragment.color, texture[0], 3D;\n"
  50                 "END",
  51
  52                 "!!ARBfp1.0\n"
  53                 "TEX result.color, fragment.color, texture[0], 1D;\n"
  54                 "END",
  55
  56                 "!!ARBfp1.0\n"
  57                 "TEX result.color, fragment.color, texture[0], CUBE;\n"
  58                 "END",
  59
  60                 "!!ARBfp1.0\n"
  61                 "TEX result.color, fragment.color, texture[0], RECT;\n"
  62                 "END"
  63 };
  64
  65 static void DoFrame(void)
  66 {
  67         int i;
  68
  69         glClearColor(0.3, 0.3, 0.3, 0.3);
  70         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  71
  72         glEnable(GL_FRAGMENT_PROGRAM_ARB);
  73
  74         for(i = 0; i < NUM_PROGRAMS; ++i) {
  75                 glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, FragProg[i]);
  76
  77                 glPushMatrix();
  78                 glTranslatef(i/2, i%2, 0);
  79                 glBegin(GL_QUADS);
  80                         glVertex2f(0, 0);
  81                         glVertex2f(1, 0);
  82                         glVertex2f(1, 1);
  83                         glVertex2f(0, 1);
  84                 glEnd();
  85                 glPopMatrix();
  86         }
  87 }
  88
  89 static const struct {
  90         const char* name;
  91         float x, y;
  92         float expected[4];
  93 } Probes[] = {
  94         {
  95                 "incomplete 2D",
  96                 0.5, 0.5,
  97                 { 0,0,0,1 }
  98         },
  99         {
 100                 "incomplete 3D",
 101                 0.5, 1.5,
 102                 { 0,0,0,1 }
 103         },
 104         {
 105                 "incomplete 1D",
 106                 1.5, 0.5,
 107                 { 0,0,0,1 }
 108         },
 109         {
 110                 "incomplete CUBE",
 111                 1.5, 1.5,
 112                 { 0,0,0,1 }
 113         },
 114         {
 115                 "incomplete RECT",
 116                 2.5, 0.5,
 117                 { 0,0,0,1 }
 118         },
 119
 120         {
 121                 "sanity",
 122                 2.5, 1.5,
 123                 { 0.3,0.3,0.3,0.3 }
 124         },
 125
 126         // Sentinel!
 127         {
 128                 0,
 129                 0, 0,
 130                 { 0, 0, 0, 0 }
 131         }
 132 };
 133
 134 static bool DoTest( void )
 135 {
 136         int idx = 0;
 137         bool pass = true;
 138
 139         while(Probes[idx].name) {
 140                 pass = piglit_probe_pixel_rgba(
 141                         (int)(Probes[idx].x * piglit_width / 3),
 142                         (int)(Probes[idx].y * piglit_height / 2),
 143                         Probes[idx].expected) && pass;
 144                 idx++;
 145         }
 146
 147         return pass;
 148 }
 149
 150
 151 enum piglit_result
 152 piglit_display(void)
 153 {
 154         bool pass;
 155
 156         DoFrame();
 157         pass = DoTest();
 158         piglit_present_results();
 159
 160         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 161 }
 162
 163 void
 164 piglit_init(int argc, char **argv)
 165 {
 166         int i;
 167
 168         printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
 169
 170         piglit_require_fragment_program();
 171
 172         for(i = 0; i < NUM_PROGRAMS; ++i)
 173                 FragProg[i] = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, ProgramText[i]);
 174
 175         piglit_gen_ortho_projection(0.0, 3.0, 0.0, 2.0, -2.0, 6.0, GL_FALSE);
 176 }
 177